Mold and method of filling the same



A g- 6, 3 I R. MINKE 1,774,104

MOLD AND METHOD OF FILLING THE SAME Filtd June 15, 1927 14 Fig. 2

(i U {J gwuentoz Patented Aug. 265 1939 I I if Panr asina i RALEIGHMINKE, OF TOLEDO, onro, ASSIGNOR .rornn vacuum CASTING 00111251871 2 onronnno, OHIO, A oonronarron or 01110" V I 1 MOLD AND METHOD 01: FILLINGTHE SAME Application filed June 13, 1927. Serial No. 198,465.

This invention relates to a method of castup the partitions at 23 when.the mold is ing metal and apparatus therefor. The purmoved in thedirection of arrow 24 on Fig. 2. pose ofthe invention is to fill ainoldwith slanting the bottom'ofthe inlet forward metal quickly, andWithout the production inthe; manner described, tends to scoop up. y 5of excessive eddy currents within the mold. the metal when. relativehorizontal -move- 55.

Morespecifically, the purpose of the invenment is produced between themold and the tion is to utilize relative horizontal movement metal. Thisminimizes the differential pres-- of the mold and molten metal infilling the sure on the metal within the mold and outmold, particularlyin combination with evac-f side thereof necessary to fill the moldcavity, nation of air from the mold during the filling as the influx ofthe metal in the mold is-as-. 9 thereof, and to avoid unequal filling ofthe sisted by this scooping action. At the same mold which wouldotherwise result from reltime it rendersv the beginning of the influxative horizontal movement of the mold and of the metal'int o the moldmore'prompt and molten metal in the direction of an elongated retardsthe tendency of the metal to flow horizontal inlet opening in a mold. rdownward; from the inlet when the mold is 5 Further detailsof theinvention will apra sed abovet-he molten metal in the conpear as thedescription proceeds. tamer, thus lengthening appreciably the ef- In theaccompanying drawings forming a fective filling time for the mold. Furtherpart of this specification, Figure lis a diamore, when the openingiselongated in the grammatic plan view of apparatussuitable direction oftravel of the mold,'the partitions 70 for carrying out the method; Fig.2 is a sectend to equalize this scooping action along tion on the line2-2 of Fig. 1, showing-one thelength of thisinletso that the forwardmoldhalf in elevation. p end of the mold cavity is filled substantiallyIn the embodiment of the invention illusat the same time and evenly withthe "rear trated in the drawings, a mold 10 is mounted end of the moldcavity.

upon a carrier llfor revolution about an axis It Will be understood thatvariations in i 12. Arrow 13 on Fig. 1 indicates the directhe shape andarrangement of the mold and tion of movement of the mold about its axis.in the scooping partitions in the inlet are Beneath the path of the moldthere is a within the scope of this invention, being demetal container lhavinga slot 15 in its pendent upon'the shape of the article to be upperside through which the bottom of the cast. It-will also be apparentthat, with a mold may contact molten metal 16 within the stationarymold, horizontal movement of the container. metal container, or of themetal in the con- The mold cavity 17 is connected by a nartainer,produces substantially the'same result row slit between the matingsections with a as horizontal-'movement of the mold where 85 vacuumgroove 18 in the face of the sections. the metal is stationary, aseither the mold or Air is exhausted from this vacuum groove the metalmay be moved, or both may be and so from the mold'cavity by any suitablemoved, the relative motion of themetal and means, not shown. I the moldbeing the only requisite for produc- 40 At the bottom of the mold thereis an ining'thedescribed effect. It will also beap- 30 let opening 19.This inlet opening is prefparent that suflicientlyrapid relative move--erably elongated in the direction of movement of themold and metal inproportion to ment of the mold, and across the inlet openthe height ofthe mold cavity above the level ing there are a plurality ofpartitionsQO. of the metal outside of the mold will result The bottomsof these partitions slant forin completely filling the cavity withoutthe ward in the direction of movement of'the aid ofdifferential;pressures, although the mold. The forward end 21 of themold inlet combinationof the two forces for filling the likewise slantsforward, and so doesthe rear mold is preferred. 7 end 22 of the moldinlet. It will be readily It will be further understood that, where seenthat the molten metal will tend to slide there is relative horizontalmovement. be-

tween the mold and the metal, and the inlet is elongated in thedirection of such movement, partitions across the inlet tend to equalizethe distribution of the metal even if such partitions are vertical,because they prevent the flowing of the metal to the rear of the moldandcause it to rise substantially equally through each of the pluralityof inlets formed by said partitioned inlet.

Various other modifications may be made within the scope of the appendedclaims.

WVhat I claim is: r

1. The method of filling a mold with molten metal,iwhich comprisesproducing relative horizontal movement between the mold and the metal,and utilizing said horizontal movement to raise the metal into the moldcavity, by means of a surface slanting downward'from the mold cavity andforward in the direction of mold travel. a

2. The method of filling a mold with molten metal, which comprisesarranging the mold with its inlet downward and immersed in molten metal,producing relative horizontal movement between the mold and metal withthe inlet directed downward and forward in the direction of mold travelso that said relative movement tends to scoop the metal into the mold. I

3. The method of filling a mold with molten metal, which comprisesarranging the mold with its inlet downward and immersed in molten metal,produc ng relatlve hor zontal movement between the mold and metal withthe inlet directed downward and forward in the direction of mold travelso that said relative movement tends to scoop the metal into the, mold,andcompleting the filling of the mold by exhausting air from the moldcavity. e v

4. A mold having an inlet opening in its bottom, a container for moltenmetal, and means permittingrelative horizontal movement between the moldandthe container, the bottom end of the inlet in the mold slanting in adirection to cause said relative move? ment to force metal upward intothe mold.

5. A mold having an inlet opening in its bottom, a container for moltenmetal, and means'permitting relative horizontal movement between themold and the'container, the bottom end of the inlet in the mold slantingin a direction to cause said relative movement to force metal upwardinto the mold, the inlet being elongated in the direction ofsaidrelative movement and there being partitions across said inlet, saidpartitions slant ing in a direction to aid in the lifting of the a metalinto the mold.

I from said opening to the casting cavity, a

container for molten metal, means for permitting relative, horizontalmovement between the mold and the metal, said inlet and passage beingelongated in the direction of said relative movement, and partitionsacross said passage dividing it into a row of passages.

7. A mold having an inlet opening in its bottom, a container for moltenmetal, and means permitting relative horizontal movement between themold and the container, the bottom end of the inlet in the moldslanting'in a direction to cause said relative movement to force metalupward into the mold, and connections for exhausting the air from hemold cavity.

8. A mold having an inlet opening in its bottom, a container for moltenmetal, and means for permitting relative horizontal movement between themold and the container, the bottom end of the inlet in the mold slantingin a direction to cause said relative movement to force metal upwardinto the mold, the inlet being elongated in the direction of saidrelative movement and there being partitions across said inlet, saidpartitions slanting in a direction to aid in the lifting of the metalinto the mold, and connections for exhausting the air from the moldcavity.

9. A mold. having an inlet in the bottom thereof, a container for moltenmetal, means for permitting relative horizontal move-. ment between themold and the metal, said inlet being elongated in the direction of saidrelative movement, and partitions across said inlet forming a row ofinlets arranged in the line of said relative movement, and con nectionsfor exhausting the air from the mold cavity.

10. A mold having an inlet opening in its underside and a passageslanting at an angle to the vertical upward from said opening to hecasting cavity, and a mounting for the mold permitting relativehorizontal movement between the mold and molten metal in contact withthe bottom of the mold around said opening.

11.. A mold having a horizontally elongated inlet opening in itsunderside, the passage leading upward from said opening to the castingcavity and partitions across the passage, said partitions being at anangle to the vertical andall slanting in the same direction.

12. A mold having an inlet opening in its underside, said inlet openingbeing elongated horizontally, and a passage leading upward from saidopening to the mold cavity and a fin on the side of the inlet openingarranged at an angle to the vertical, and a mounting for the moldpermitting relative horizontal movement between the mold and moltenmetal in contact with the bottom of the mold around said opening.

In testimony whereof, I have hereunto signed my name to thisspecification.

